chore: update OpenAPI spec [sdk-bot] (#235)

Co-authored-by: OpenRouter SDK Bot <sdk-bot@openrouter.ai>

Author: robert-j-y

.speakeasy/in.openapi.yaml

@@ -591,6 +591,7 @@ components:
         - end_page_number
       type: object
     AnthropicCitationsConfig:
+      default: null
       example:
         enabled: true
       nullable: true
@@ -892,7 +893,6 @@ components:
             - document
           type: string
       required:
-        - citations
         - source
         - title
         - type
@@ -4593,6 +4593,20 @@ components:
       required:
         - type
       type: object
+    ChatServerToolChoice:
+      description: >-
+        OpenRouter extension: force a specific server tool by naming it directly in `tool_choice.type` instead of
+        wrapping it in `{ type: "function", function: { name } }`.
+      example:
+        type: openrouter:web_search
+      properties:
+        type:
+          description: OpenRouter server-tool type to force (e.g. `openrouter:web_search`, `web_search`, `web_search_preview`).
+          example: openrouter:web_search
+          type: string
+      required:
+        - type
+      type: object
     ChatStreamChoice:
       description: Streaming completion choice chunk
       example:
@@ -4957,6 +4971,7 @@ components:
             - required
           type: string
         - $ref: '#/components/schemas/ChatNamedToolChoice'
+        - $ref: '#/components/schemas/ChatServerToolChoice'
       description: Tool choice configuration
       example: auto
     ChatToolMessage: